import type * as P from "@principia/prelude";
import type { EIO, URI, V } from "./model";
export declare const alt_: <E, A, G>(fa: EIO<E, A>, that: () => EIO<G, A>) => EIO<E | G, A>;
export declare const alt: <A, G>(that: () => EIO<G, A>) => <E>(fa: EIO<E, A>) => EIO<G | E, A>;
/**
 * @category Alt
 * @since 1.0.0
 */
export declare const Alt: P.Alt<[URI], V>;
//# sourceMappingURL=alt.d.ts.map